A carbon‐13 NMR study of sterically hindered organotin derivatives

Abstract

Proton and 13C NMR has been used to examine a series of organotin derivatives. Anisochronous shifts are reported for chiral derivatives of tin, and 'H and 13C spin coupling constants to ll'Sn and '19Sn are discussed. Spin lattice relaxation of I3C in these derivatives has been measured, and is used to indicate the effects of steric crowding on the ligands in terms of their freedom to undergo conformational rearrangements.

Solvent Influence in Reactions of Fluoroalkyl Sulfonic Acids with Phenyldistannanes

“…The reaction of the resulting derivatives with Grignard reagents yielding diastereomeric distannanes is also discussed. Although, some diastereomeric distannanes have already been published, [8][9][10][11][12][13][14] this novel reaction pathway allows an easy one-pot access to this class of compounds.…”